OF WASHINGTON. 409 



rounded and full, distinctly wider than high, not bilobed ; clypeus 

 slightly contracted at the sides, proportionately higher than in the 

 preceding genera, the paraclypeal pieces reaching about three- 

 fourths of the distance to the vertex ; dark red, polished, labrum, 

 ocelli and antennae black ; width about 4 mm. Body cylindrical, 

 joint 12 very slightly enlarged. Thoracic feet large, the abdomi 

 nal ones moderate with well-developed hairy shields. Warts 

 fairly large, especially ii and iii, i and iv small, but not minute. 

 On prothorax two small warts on each half of the degenerated 

 cervical shield and a group of hairs posteriorly ; prestigmatal and 

 subventral warts large. On meso- and metathorax, three large 

 warts on each side, the upper elongate, and on the metathorax, 

 marked with a slight suture, showing its compound nature. On 

 abdomen wart i somewhat smaller than iii, iv exactly behind the 

 spiracle except on joint 12, where it is below it ; v and vi large ; 

 anal plate somewhat corrugated, blue-black. Hair rather sparse, 

 black and white mixed, a long single hair from the subdorsal 

 wart on metathorax appears to have been present, though the 

 hairs are somewhat broken in the specimens. Ground color 

 black, all the warts shining blue-black. A very wide, deep yel 

 low, dorsal stripe, strongly constricted between warts i and nar 

 rowly linear between the halves of the cervical shield ; a series of 

 lateral yellow bars, Forming a broken line, broadly interrupted at 

 the centers of the segments ; a very broad stigmatal band, broken 

 at wart iv, forming a series of intersegmentary lunate marks, irreg 

 ularly lobed on the under side. Venter broadly pale yellow ; all 

 the feet black outwardly. Hairs all of one kind, sparsely bar- 

 buled. 



Food plant, Cynoglossum occidcntale. 



The larvae of G. vermiculata as described by Bruce and Cock- 

 erell, seem to be the same as this in all characters. I think that 

 it will prove that latipennis and vermiculata, as well as morri- 

 soni Druce, are only varying geographical forms of one species. 



Specimens of the larvae of Daritis howardi, Composia Jide- 

 lissima, and Gnopkcela latipennis were exhibted by Dr. Dyar. 



The last paper of the evening was by Mr. Marlatt, and was enti 

 tled tk The penial structures of Anasa tristis DeG." Mr. Marlatt 

 described with the aid of drawings the peculiar anatomical details 

 of the organ and appendages of the insect named, and pointed out 

 the value of the characters found in the genitalia of this and other 

 Hemiptera as a means of classification. In discussion, Prof. 

 Uhler said that he had corresponded extensively with Dr. David 

 Sharp on the subject of the genitalia of the Heteroptera ; Cham- 



